Distribution: Occurring west of the Cascades crest in Washington; British Columbia to northern Oregon; also in eastern North America.
Habitat: Open forest, fields, shores, wastelots, and other disturbed areas generally at low to middle elevations.
Flowers: June-August
Origin: Introduced from Europe
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bees, flies, beetles, wasps
Perennials with milky juice from a short rhizome, the stems 30-60 cm. tall, with stiff hairs below and stellate-pubescence and stalked glands above.
Leaves mostly basal, lance-elliptic to lanceolate, entire or more or less dentate, 5-10 cm. long and 1-5 cm. wide, the bases usually wedge-shaped; cauline leaves often mottled with purple.
Heads 3-9 in a flat-topped inflorescence, the peduncles and involucres stellate-pubescent and stipitate-glandular; involucres 8-10 mm. high, the bracts pointed; flowers 40-80, all ligulate, yellow, 13-18 mm. long; pappus of straw-colored, capillary bristles.
Achenes columnar, 2.5-3 mm. long.
PNW Herbaria: Specimen records of Hieracium lachenalii in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Hieracium lachenalii checklist entry
OregonFlora: Hieracium lachenalii information
E-Flora BC: Hieracium lachenalii atlas page
CalPhotos: Hieracium lachenalii photos